model.grayscaleClass.java Source code

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Here is the source code for model.grayscaleClass.java

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/*
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package model;

import java.awt.image.BufferedImage;
import java.awt.image.DataBufferByte;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.imageio.ImageIO;

import org.opencv.core.Core;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.imgproc.Imgproc;

//
///**
// *
// * @author Bimla Madhavee
// */
public class grayscaleClass implements Preprocessable {

    /**
     *
     * @param image
    * @return
     */
    public File imagePreprocessing(String image, String ex) {
        BufferedImage bImge = null;
        BufferedImage bImage2 = null;
        File grayscle = null;

        try {

            // loadOpenCV_Lib();
            //String path = "opencv\\build\\java\\x64\\opencv_java300.dll";
            System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
            FileInputStream fileName = new FileInputStream(
                    "C:\\bimla\\Dev\\java\\OCRSystem\\WebContent\\uploadedImage\\" + image);
            InputStream input = fileName;
            bImge = ImageIO.read(input);
            byte[] imgeByte = ((DataBufferByte) bImge.getRaster().getDataBuffer()).getData();
            Mat mat1 = new Mat(bImge.getHeight(), bImge.getWidth(), CvType.CV_8UC3);
            mat1.put(0, 0, imgeByte);
            Mat mat2 = new Mat(bImge.getHeight(), bImge.getWidth(), CvType.CV_8UC1);
            Imgproc.cvtColor(mat1, mat2, Imgproc.COLOR_RGB2GRAY);
            byte[] imageData = new byte[mat2.rows() * mat2.cols() * (int) (mat2.elemSize())];
            mat2.get(0, 0, imageData);
            bImage2 = new BufferedImage(mat2.cols(), mat2.rows(), BufferedImage.TYPE_BYTE_GRAY);
            bImage2.getRaster().setDataElements(0, 0, mat2.cols(), mat2.rows(), imageData);

            String extn = null;
            /*   switch (extnsn) {
                   case ".jpg":
               extn = "jpg";
               break;
                   case ".png":
               extn = "png";
               break;
                   case ".pdf":
               extn = "pdf";
               break;
                   case ".tiff":
               extn = "tif";
               break;
                
               }*/
            //writing the grayscale image to the folder
            grayscle = new File(
                    "C:\\bimla\\Dev\\java\\OCRSystem\\WebContent\\uploadedImage\\grayscale" + "." + "jpg");
            ImageIO.write(bImage2, "jpg", grayscle);
        } catch (IOException ex1) {
            System.out.println("" + ex1.getMessage());
        } catch (Exception ex1) {
            Logger.getLogger(grayscaleClass.class.getName()).log(Level.SEVERE, null, ex1);
        }
        return grayscle;

    }

}